I don't doubt the rumored specs, considering the 620 hp ZR1, 600 hp Viper, etc. The horsepower war is definitely in full effect. Even if you discount sports cars, and focus on sport sedans, the specs are still mind-boggling. Let's see you have the 507 hp M5 and Merc E63 AMG, and the eye-popping Audi RS6 with a twin-turbo V10 good for ~580 hp, and GM just lobbed a 550 hp bomb in the horsepower arena known the CTS-V.

I mean, even the bread and butter family sedans are packing heat (268 horsepower in both the Camry and Accord).

It's definitely a great time to be a car enthusiast where speed is a priority.